Authors: I Boutron; S Poiraudeau; J-F Ravaud; G Baron; M Revel; R Nizard; M Dougados; Ph Ravaud Journal: Ann Rheum Dis Date: 2003-08 Impact factor: 19.103
Authors: M H Williams; J N Newton; S J Frankel; F Braddon; E Barclay; J A Gray Journal: J Epidemiol Community Health Date: 1994-04 Impact factor: 3.710